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List:       postfix-users
Subject:    Re: Suggestions for less spam
From:       Matus UHLAR - fantomas <uhlar () fantomas ! sk>
Date:       2019-09-24 10:58:45
Message-ID: 20190924105845.GB31555 () fantomas ! sk
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>> On 24.09.19 12:11, Paul van der Vlis wrote:
>> >I am using now much of your setting and it seems to help. Thanks a lot!

>On Tue, 24 Sep 2019 at 11:31, Matus UHLAR - fantomas <uhlar@fantomas.sk>
>wrote:
>> I would just like to note that all those reject_rbl_client directives are
>> prone to errors when any of those blacklist fails.

On 24.09.19 11:54, Dominic Raferd wrote:
>An occasional individual blacklist lookup failure is not a problem, and is
>rare (except for b.barracudacentral.org). I have not felt the need for
>postscreen but of course it is a good tool: I prefer to block by ip last
>and to log helo, envelope sender & recipient as well as client ip. This
>puts a little more load on the server, but information is power.

I'm not talking about temporary failures when resolving blacklists.  I am
talking about sender IP addresses appering in random blacklists (probability
increases with number of used blacklists), shut down blacklist returning
positive addresses with all lookups (happened a few times in the history)
etc.

-- 
Matus UHLAR - fantomas, uhlar@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
Save the whales. Collect the whole set.
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